TY  - RPRT
TI  - Structural complexity and the time course of grammatical development.
AU  - R Frank
PY  - 1998
DO  - 10.1016/s0010-0277(98)00024-9
UR  - https://pubmed.ncbi.nlm.nih.gov/9689771/
ID  - 9689771
ER  -